🚀 Graph tutorial 11: Detect a Cycle in an Undirected Graph using DFS | Data Structures | Graph

Опубликовано: 29 Май 2026
на канале: InterviewWithBunny
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In this video, I explain how to detect a cycle in an undirected graph using the Depth-First Search (DFS) approach. Cycle detection is one of the most important topics in graph theory, commonly asked in coding interviews and used in real-world applications like detecting circular dependencies and analyzing networks. This detailed tutorial will help you master the DFS algorithm for solving this problem efficiently.

What’s Covered in This Video?
🔹 What is cycle detection? Understanding its significance in graph problems.
🔹 The difference between cycle detection in directed and undirected graphs.
🔹 Step-by-step explanation of the DFS algorithm to identify cycles in an undirected graph.
🔹 Java implementation of the algorithm with a detailed code walkthrough.
🔹 Visualization of the algorithm using diagrams and examples for better understanding.
🔹 Analysis of time complexity and space complexity of the solution.
🔹 Edge cases and common pitfalls to watch out for when implementing this algorithm.

►►Playlist:
Graph Tutorial 1: Introduction to Graph | Types | Terminologies:    • 🚀 Graph Tutorial 1: Introduction to Graph ...  
Graph Tutorial 2: Representation of Graph in Java | Which one is Best :    • 🚀 Graph Tutorial 2: Representation of Grap...  
Graph Tutorial 3: Graph Simplified Implementation in Java:    • 🚀 Graph Tutorial 3: Graph Implementation S...  
Graph Tutorial 4 : Breadth First Search (BFS) | Traversal Technique:    • 🚀 Graph Tutorial 4: Breadth First Search (...  
Graph Tutorial 5 : Depth First Search (DFS) | Traversal Technique:    • 🚀 Graph Tutorial 5 : Depth First Search (D...  
Graph Tutorial 6: BFS & DFS Traversal For Disconnected Graph:    • 🚀 Graph Tutorial 6: BFS & DFS Traversal Fo...  
Graph Tutorial 7: Number of Provinces | Connected Components:    • 🚀 Graph Tutorial 7: Number of Provinces | ...  
Graph Tutorial 8: Number of Islands | Count Connected Components in Matrix:    • 🚀 Graph Tutorial 8: Number of Islands | Co...  
Graph Tutorial 9: Rotten Oranges Leetcode:    • 🚀 Graph Tutorial 9: Rotten Oranges Leetcod...  
Graph Tutorial 10: Detect a Cycle in an Undirected Graph using BFS:    • 🚀 Graph Tutorial 10: Detect a Cycle in an ...  
Graph tutorial 11: Detect a Cycle in an Undirected Graph using DFS:    • 🚀 Graph tutorial 11: Detect a Cycle in an ...  
Graph Tutorial 12 : Detect Cycle in a Directed Graph using DFS :    • 🚀 Graph Tutorial 12 : Detect Cycle in a Di...  
Graph Tutorial 13: What is Topological Sorting:    • 🚀 Graph Tutorial 13: What is Topological S...  
Graph Tutorial 14: Topological Sort Algorithm using DFS Traversal:    • 🚀 Graph Tutorial 14: Topological Sort Algo...  

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Keywords/Tags:
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